Building a custom sub enclosure?

Building 2x12 Ported Sub Enclosure, how many cubic feet?

• Also: do you have any website with Dual sub enclosure designs? Those who have my sub say that it works best with 2.5cuft ported for a single 12"..it's a sub that plays well with a bigger box. It's an Asian brand sub, and i've been to many EB's and the sub is bang for the buck..these subs have placed in many competitions. If 1 sub requires 2.5cuft..would that mean that 2 subs would require 5cubic feet?? Thanx for the replies.

• Answer:

  Each sub will get 2.5 cu.ft and each in it's own camber. This should be of some help http://spkrbox1.spaces.live.com